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Subject: Entomology × Author: Panghal, Puneet × End date: 2009 × Start date: 2006 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Evaluation of mungbean, vigna radiata (L.) wilczek genotypes against whitefly, bemisia tabaci gennadius and its management
    (CCSHAU, 2006) Panghal, Puneet; Roshan Lal
    The present studies were carried out during the year 2005 in Pulses Section, CCS Haryana Agricultural University, Hisar. Eighteen genotypes of mungbean were evaluated to study the population dynamics of whitefly and infection of mungbean yellow mosaic virus on different genotypes. Out of 18 genotypes, MH 412 and MH 435 genotypes harboured the minimum population of whitefly adults, eggs, nymphs and pupae whereas, MH 420 and K-851 for whitefly. Genotype MH 435 was found resistant mungbean yellow mosaic virus whereas, MH 401 was highly susceptible and K-851 were the most preferred hosts for whitefly. Genotype MH 435 was found resistant to mungbean yellow mosaic virus whereas, MH 401 was highly susceptible and K-851 susceptible to MYMV infection. Meteorological parameters were also correlated with the population of whitefly. Temperature, pan evaporation, sunshine showed positive and non-significant correlation while relative humidity and rainfall were negative and non-significantly correlated with population Literature Cited -xiiof whitefly. Phenotypic characteristics of 18 different genotypes of mungbean were studied, to evaluate their correlation with incidence of B. tabaci. Phenotypic characters such as leaf size and glabracity showed positive and significant while leaf thickness was negative and significant correlation with whitefly population. There was no correlation between length of setae with whitefly population. Two insecticides imidacloprid 200SL and dimethoate 30EC were used for seed treatment and four namely imidaclopird 200SL, oxydemeton methyl 25EC, NSKE and Verticillium lacani including combination with the seed treatments were applied against B. tabaci in field conditions. Seed treatment with imidacloprid 200SL @ 3ml and dimethoate 30EC @ 5ml/kg seed followed with spraying of NSKE 5% proved most effective treatments in controlling whitefly and mungbean yellow mosaic virus on mungbean. Seed treatment with imidacloprid 200SL @ 3ml and dimethoate 30EC @ 5ml/kg seed proved better than untreated control in realizing yield. Seed treatment with dimethoate 30EC @ 5ml/kg seed showed maximum cost benefit ratio.